UNIFEI - Campus 1: Itajubá: Recent submissions

  • OLIVEIRA, Rodrigo de Paula; http://lattes.cnpq.br/5064246555325769 (Universidade Federal de ItajubáBrasilIEPG - Instituto de Engenharia de Produção e GestãoPrograma de Pós-Graduação: Mestrado - Engenharia de ProduçãoUNIFEI, 2023-02-27)
    The growth of the internet favored the development of electronic marketplaces, online platforms that act as intermediaries in the negotiation process between two independent parties. When inserted in the context of load ...
  • CEZAR, Pedro Henrique Valentim; http://lattes.cnpq.br/1065245224253267 (Universidade Federal de ItajubáBrasilIRN - Instituto de Recursos NaturaisPrograma de Pós-Graduação: Mestrado - Desenvolvimento, Tecnologias e SociedadeUNIFEI, 2023-02-27)
    The projects of public managers for works to improve the infrastructure of urban space have been characterized by the use of civil construction techniques, such as, for example, asphaltic paving of streets, including ...
  • MARQUES, Sara Maria; http://lattes.cnpq.br/8596447175041908 (Universidade Federal de ItajubáBrasilIRN - Instituto de Recursos NaturaisPrograma de Pós-Graduação: Mestrado - Meio Ambiente e Recursos HídricosUNIFEI, 2023-02-15)
    The disorderly use of water resources leads them to depletion, resulting in the emergence of environmental and social issues. Thus, a relevant aspect to be observed in water supply systems are the losses that occur throughout ...
  • SILVA, Alex Takeo Yasumura Lima; Lattes: http://lattes.cnpq.br/8256163636370312 (Universidade Federal de ItajubáBrasilIRN - Instituto de Recursos NaturaisPrograma de Pós-Graduação: Doutorado - Meio Ambiente e Recursos HídricosUNIFEI, 2023-02-15)
    The scarcity of natural resources, especially water and energy, put the population at risk of water supply. Therefore, they become necessary procedures to guarantee the optimal operation of a water distribution network. ...
  • FONSECA, Karine Bolaños da; http://lattes.cnpq.br/4559505598689709 (Universidade Federal de ItajubáBrasilIFQ - Instituto de Física e QuímicaPrograma de Pós-Graduação: Doutorado - Materiais para EngenhariaUNIFEI, 2022-11-18)
    This work presents a study on the magneto-transport properties of nanostructures based on Bi2Te3 and PbTe, both narrow gap semiconductors. Electrical transport in a n-type PbTe quantum well was investigated using light ...
  • ROSA, João Paulo Martins Mansano; http://lattes.cnpq.br/4681092687898367 (Universidade Federal de ItajubáBrasilIFQ - Instituto de Física e QuímicaPrograma de Pós-Graduação: Mestrado - Ciência e Engenharia de MateriaisUNIFEI, 2023-02-08)
    Nowadays, the use of thermoelectric materials could be a promising solution to a global energy crisis, due to its ability to convert thermal energy into electrical energy, based on the Seebeck effect. Due to its intrinsic ...
  • VILLANUEVA, JacKelyne Lisset Medina (Universidade Federal de ItajubáBrasilIFQ - Instituto de Física e QuímicaPrograma de Pós-Graduação: Mestrado - FísicaUNIFEI, 2022-12-16)
    The aim of this study was to investigate the influence of the etch-stop time on the structural and optical properties of multilayer structures and their passivation to avoid aging effects. Structural analysis by scanning ...
  • GIFFONI, Rony Leite; http://lattes.cnpq.br/5308105940248797 (Universidade Federal de ItajubáBrasilIESTI - Instituto de Engenharia de Sistemas e Tecnologia da InformaçãoPrograma de Pós-Graduação: Mestrado - Engenharia ElétricaUNIFEI, 2002-11-08)
    Over the years, the reduction of the power supply voltage has become a main trend in the design of VLSI integrated circuits. This has been driven individually or collaboratively by technology, power management and market ...
  • CARDOSO, Carlos Henrique Rodrigues; http://lattes.cnpq.br/7241921795738753 (Universidade Federal de ItajubáBrasilIESTI - Instituto de Engenharia de Sistemas e Tecnologia da InformaçãoPrograma de Pós-Graduação: Mestrado - Engenharia ElétricaUNIFEI, 2002-11-14)
    This paper shows a process, or model, of software development based on UML, focusing the practical use of UML diagrams. This process generates diagrams step by step so it can change the development activities interconnected. ...
  • BASTOS, Paulo Roberto Ferreira de Moura; http://lattes.cnpq.br/0490391460121565 (Universidade Federal de ItajubáBrasilIEM - Instituto de Engenharia MecânicaPrograma de Pós-Graduação: Mestrado - Engenharia de EnergiaUNIFEI, 2002-12-11)
    The "Portfolio Theory" has been largely employed on stock markets, aiming to improve the relation between risk and return. This theory identifies many possible investment combinations once it's associated with the idea ...
  • LIMA, Roberth dos Santos; http://lattes.cnpq.br/3510801288386267 (Universidade Federal de ItajubáBrasilIEM - Instituto de Engenharia MecânicaPrograma de Pós-Graduação: Mestrado - Engenharia de EnergiaUNIFEI, 2002-12-11)
    This work presents a standardizing proposal for Electrical Projects of small hydroelectric central and it has as objective to optimize some solutions for the most cases, considering the great diversity of options. The ...
  • GALLI, Marcos; http://lattes.cnpq.br/3358393116718446 (Universidade Federal de ItajubáBrasilIEM - Instituto de Engenharia MecânicaPrograma de Pós-Graduação: Mestrado - Engenharia MecânicaUNIFEI, 2002-11-18)
    This work describes a didactic test rig both for simulation of a control system and for studies thermal exchange in a shell and tube type heat exchanger enabling simulation of several configuration of flow currents. ...
  • CARVALHO, Fabiano Valias; Lattes: http://lattes.cnpq.br/7210105269537510 (Universidade Federal de ItajubáBrasilIESTI - Instituto de Engenharia de Sistemas e Tecnologia da InformaçãoPrograma de Pós-Graduação: Mestrado - Engenharia ElétricaUNIFEI, 2002-12-03)
    The purpose of this work is the implementation of a method for estimation of the dynamic torque to induction motor, using the three phases voltages and currents samples, with a DSP (Digital Signal Processor) based circuit ...
  • RICCI, José Eugênio Rios; http://lattes.cnpq.br/5718165836447171 (Universidade Federal de ItajubáBrasilIEM - Instituto de Engenharia MecânicaPrograma de Pós-Graduação: Doutorado - Engenharia MecânicaUNIFEI, 2002-09-20)
    The aim of this work is to simulate numerically the two-dimensional, incompressible, unsteady flow around a body of arbitrary shape in the presence of a ground plane. The fluid is Newtonian, with constant properties. ...
  • PIRANI, Marcelo José (Universidade Federal de ItajubáBrasilIEM - Instituto de Engenharia MecânicaPrograma de Pós-Graduação: Doutorado - Engenharia MecânicaUNIFEI, 2003-03-18)
    By using the finite volume method and SOLA algorithm, the study of turbulent twodimensional flow in a toroidal regenerative turbomachine is carried out. The equations representing the movement in cartesian coordinates ...
  • PETRUCCI, Denis Rinaldi; http://lattes.cnpq.br/1984194112324472 (Universidade Federal de ItajubáBrasilIEM - Instituto de Engenharia MecânicaPrograma de Pós-Graduação: Doutorado - Engenharia MecânicaUNIFEI, 2003-05-21)
    In this work, two inverse methods for isolated airfoil and turbomachinery cascades design are presented. The first method is based on an iterative correction algorithm with an efficient panel technique for potential flow ...
  • HONÓRIO, Leonardo de Mello; http://lattes.cnpq.br/4319412527458142 (Universidade Federal de ItajubáBrasilIESTI - Instituto de Engenharia de Sistemas e Tecnologia da InformaçãoPrograma de Pós-Graduação: Doutorado - Engenharia ElétricaUNIFEI, 2002-03-07)
    This thesis studies three topics related to voltage collapse: Load margin increase, load shedding and sensitivity analysis. For each study, optimization techniques are employed. For load margin increase, a new strategy ...
  • CARDOZO, Ricardo Francisco Alonso; http://lattes.cnpq.br/0077843946526379 (Universidade Federal de ItajubáBrasilIESTI - Instituto de Engenharia de Sistemas e Tecnologia da InformaçãoPrograma de Pós-Graduação: Doutorado - Engenharia ElétricaUNIFEI, 2022-12-09)
    Resilience of electrical power systems is a paradigm that has been studied in order to provide continuity to the electrical energy service during the interruption of the main source. This leads to the need to use the ...
  • SANTOS, Erivelton Antonio dos; http://lattes.cnpq.br/0772866667979482 (Universidade Federal de ItajubáBrasilIEPG - Instituto de Engenharia de Produção e GestãoPrograma de Pós-Graduação: Doutorado - Engenharia de ProduçãoUNIFEI, 2023-02-02)
    Supply chains are susceptible to uncertainties, such as large-scale natural disasters, manufacturing fires, terrorist attacks, widespread electrical shutdowns, financial and political tension, and wars. Therefore, rising ...
  • CAMPOS, Bruno de; http://lattes.cnpq.br/1825879812869376 (Universidade Federal de ItajubáBrasilIRN - Instituto de Recursos NaturaisPrograma de Pós-Graduação: Mestrado - Meio Ambiente e Recursos HídricosUNIFEI, 2022-12-16)
    The Paraiba do Sul River Basin (PSRB) is frequently affected by extreme rainfall events, especially by weather systems during its rainy season, leading to financial damage and losses of human lives. The Numerical Weather ...